Jaguar · Known Issues
2004-2019 Jaguar XJ Problems: 29 Known Issues
2004-2019 model years · 6,020+ owner reports · Updated September 2026
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2004-2019 model years · 6,020+ owner reports · Updated September 2026
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According to Au7o's analysis of 6,020+ owner reports, the 2004-2019 Jaguar XJ has 29 documented known issues, with 12 rated critical. The most serious are Air Suspension Compressor Failure ($1,000-$3,000 repair), AJ133 5.0 V8 Timing Chain Tensioner Ratchet and Plastic Guide Rail Wear ($3,500-$9,000 repair), Plastic Thermostat Housing and Water Pump Impeller Failure on the 4.2 AJ34 V8 ($600-$1,800 repair), TFT Virtual Instrument Cluster Goes Blank Intermittently — Safety Recall 17V678 / Jaguar H056 (2016-2017 XJ) ($0-$0 repair), Underfloor and Rear Crossmember Brake Pipe Corrosion (Recall 09V144 / Jaguar J012) ($0-$900 repair), X351 Water Pump and Plastic Coolant Pipe Failure Under the Supercharger ($900-$2,500 repair), Restraints Control Module Miscalibration — Airbags Deploy at Wrong Thresholds (Recall 20V-557 / Jaguar H294) ($0-$0 repair), Electronic Parking Brake Module Failure and Stuck-On Park Brake ($300-$1,500 repair), 306DT 3.0 V6 Diesel Crankshaft and Main Bearing Failure ($6,000-$15,000 repair), Front Passenger Air Bag Inflator Initiator May Fail to Ignite — Safety Recall 16V943 / Jaguar J080 (2016-2017 XJ) ($0-$0 repair), 276DT 2.7 TDV6 Oil Pump Housing Fracture at the Tensioner Mount and Crankshaft Failure from Oil Starvation (X350 XJ Diesel) ($4,000-$9,000 repair) and Crankshaft Pulley Centre Bolt Hydrogen Embrittlement Fracture — Safety Recall 19V039 / Jaguar H181 (2019 XJ V6 and V8 Petrol) ($0-$0 repair). The most commonly reported issue is Air Suspension Compressor Failure with 2,200 owner reports. Across all issues with published estimates, repair costs range from $150 to $15,000. DIY maintenance guides at au7o.io.
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS
Jaguar Land Rover North America, LLC (Jaguar) is recalling certain 2019 Jaguar F-Pace, F-Type, and XJ vehicles equipped with V6 or V8 gasoline engines. The crankshaft pulley retaining bolt may have been improperly manufactured, possibly causing the crankshaft pulley bolt to fracture, potentially resulting in engine failure.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Jaguar Land Rover North America, LLC (Jaguar) is recalling certain model year 2016-2017 Jaguar XJ vehicles manufactured September 12, 2016, to October 26, 2016. The affected vehicles have a front passenger air bag inflator initiator that may fail to ignite during a crash, preventing the air bag from deploying.
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Jaguar Land Rover North America, LLC (Jaguar) is recalling certain 2017-2018 Jaguar XF and F-Pace, 2016-2017 Jaguar XJ and 2018 Jaguar XE vehicles. The instrument cluster (IC) may intermittently go blank.
AIR BAGS
Jaguar Land Rover North America, LLC (Jaguar) is recalling certain model year 2015 Jaguar XJ vehicles manufactured July 2, 2014, to December 4, 2014. The affected vehicles may have an incorrect description of the operation of Occupant Sensor System (OSS) in the owner's manual. Since the manual does not correspond with the actual Air Bag Status Indicator Lamp, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 208, "Occupant Crash Protection."
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
Jaguar Land Rover North America (Jaguar) is recalling certain model year 2014-2015 Jaguar XJ vehicles manufactured February 6, 2014, to July 23, 2014. In the affected vehicles, the brake line junctions under the vehicle may leak brake fluid.
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According to Au7o's analysis of 6,020+ owner reports, the 2004-2019 Jaguar XJ has 29 documented issues. The most frequently reported are: Air Suspension Compressor Failure, AJ133 5.0 V8 Timing Chain Tensioner Ratchet and Plastic Guide Rail Wear, Plastic Thermostat Housing and Water Pump Impeller Failure on the 4.2 AJ34 V8. Of these, 12 are rated critical and should be addressed promptly.
The 2004-2019 Jaguar XJ has 29 known issues documented across 6,020+ owner reports. 12 issues are rated critical: Air Suspension Compressor Failure and AJ133 5.0 V8 Timing Chain Tensioner Ratchet and Plastic Guide Rail Wear and Plastic Thermostat Housing and Water Pump Impeller Failure on the 4.2 AJ34 V8 and TFT Virtual Instrument Cluster Goes Blank Intermittently — Safety Recall 17V678 / Jaguar H056 (2016-2017 XJ) and Underfloor and Rear Crossmember Brake Pipe Corrosion (Recall 09V144 / Jaguar J012) and X351 Water Pump and Plastic Coolant Pipe Failure Under the Supercharger and Restraints Control Module Miscalibration — Airbags Deploy at Wrong Thresholds (Recall 20V-557 / Jaguar H294) and Electronic Parking Brake Module Failure and Stuck-On Park Brake and 306DT 3.0 V6 Diesel Crankshaft and Main Bearing Failure and Front Passenger Air Bag Inflator Initiator May Fail to Ignite — Safety Recall 16V943 / Jaguar J080 (2016-2017 XJ) and 276DT 2.7 TDV6 Oil Pump Housing Fracture at the Tensioner Mount and Crankshaft Failure from Oil Starvation (X350 XJ Diesel) and Crankshaft Pulley Centre Bolt Hydrogen Embrittlement Fracture — Safety Recall 19V039 / Jaguar H181 (2019 XJ V6 and V8 Petrol). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Jaguar XJ issues range from $0 to $15,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Air Suspension Compressor Failure, typically costs $1,000-$3,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Reliability varies across model years of the Jaguar XJ. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2004-2019 Jaguar XJ with 29 documented issues documented across 6,020+ owner reports.
The Dunlop or Hitachi air suspension compressor on the XJ fails due to overwork from leaking air springs or aging valve blocks. The compressor runs continuously, overheats, and eventually burns out. This is one of the most common and expensive repairs on the XJ. Repairs typically run $1,000-$3,000. Severity: high.
The 5.0-litre AJ133 V8 fitted to the X351 has a widely documented timing drive weakness that has nothing to do with the earlier 4.2 AJ34's plastic tensioner story — the X350's 4.2 already ran metal tensioners and Morse chains, and merging the two engines' histories is the standar… Repairs typically run $3,500-$9,000. Severity: high.
The naturally aspirated and supercharged 4.2-litre AJ34 V8 in the X350/X358 carries an unusually large amount of load-bearing plastic in the cooling system. The thermostat housing is plastic and its internal support fractures, which lets coolant recirculate through the engine whi… Repairs typically run $600-$1,800. Severity: high.
2016-2017 X351 XJs (VIN W03265-W12691, Castle Bromwich) fitted with the 12.3-inch TFT virtual instrument cluster can lose the entire display while driving. JLR and its supplier found that circuit voltage becomes unstable at high cabin/electronics temperatures, the cluster softwar… Repairs typically run $0-$0. Severity: high.
An NVH pad fitted to the underfloor undertray of early X350 XJ sedans traps road salt and moisture against the steel brake pipes running under the floor and over the rear crossmember. The pipes corrode from the outside in and eventually lose mechanical integrity. Because the X350… Repairs typically run $0-$900. Severity: high.
The X351's cooling system fails in a pattern quite unlike the X350's. On the 5.0 V8 and the 3.0 supercharged V6, the water pump seal and bearing can fail remarkably early — owners have reported failures under 20,000 miles — and the small-diameter plastic connectors that plug into… Repairs typically run $900-$2,500. Severity: high.
A safety recall covering certain 2010-2011 and 2017 model year Jaguar XJ (X351) vehicles. When the car was connected to Jaguar Land Rover approved diagnostic equipment and a software update to the Restraints Control Module did not complete successfully, the RCM calibration could… Repairs typically run $0-$0. Severity: high.
The X350/X358 replaced the mechanical handbrake with an electric park brake driven by a module mounted in the boot, behind the right-hand trim panel ahead of the wheel arch. Two failure paths dominate. The module itself is in a location that sees moisture from the well-documented… Repairs typically run $300-$1,500. Severity: high.
The 3.0-litre V6 diesel (306DT / AJ-V6D) sold in the X351 in markets outside North America has a documented bottom-end weakness that is specific to that engine and does not apply to the petrol V6 or either V8. The crankshaft is compact and narrow, leaving thin sections between th… Repairs typically run $6,000-$15,000. Severity: high.
Certain 2016-2017 X351 XJs built between 12 September 2016 and 26 October 2016 received front passenger air bag modules whose inflator initiator may not ignite in a crash, so the passenger air bag may not deploy. There is no warning light or symptom; the defect is only identifiab… Repairs typically run $0-$0. Severity: high.
The 2.7-litre twin-turbo TDV6 (Ford/PSA-derived 276DT) fitted to the 2005-2009 X350/X358 XJ diesel has two linked bottom-end weaknesses distinct from the later 3.0 306DT story. The oil pump housing has a thin section where the rear timing-belt tensioner mounts; it cracks under lo… Repairs typically run $4,000-$9,000. Severity: high.
2019 model-year XJs with the 3.0 supercharged V6 or 5.0 V8 petrol engines received crankshaft pulley retaining bolts manufactured out of specification; hydrogen embrittlement lets the bolt crack and fracture. If it lets go the front pulley and accessory drive are lost, the engine… Repairs typically run $0-$0. Severity: high.
The XJ suffers from cascading electrical faults caused by body control module (BCM) software glitches and CAN bus communication errors. Phantom warning lights, inoperative features, and intermittent failures across multiple systems are common, especially after battery disconnecti… Repairs typically run $200-$1,500. Severity: medium.
This page previously presented one 2004-2009 electronic-throttle-body failure pattern as established fact. The audited official material does not verify that broad cause or model-year scope. It does show a direct safety conflict: NHTSA manufacturer-communication record 10017595 i… Severity: medium.
The rear crankshaft main seal on AJ-V8 engines in the XJ develops a slow oil leak over time. The leak worsens as the seal hardens and the crankshaft seal surface develops minor wear grooves. Oil drips onto the transmission bellhousing and can contaminate the clutch on manual mode… Repairs typically run $800-$2,000. Severity: medium.
The Eaton TVS supercharger on the XJR and Supersport develops bearing wear in the nose cone assembly. The bearings dry out over time, producing a whining noise that increases with RPM. The coupler between the supercharger and the drive pulley also wears, causing rattle at idle. Repairs typically run $1,200-$3,500. Severity: medium.
The 2004-2009 X350/X358 uses a saddle-shaped fuel tank straddling the driveshaft, with a lift pump on one side and a venturi jet pump transferring fuel from the other. When the jet pump or the lift pump module degrades, the engine side of the tank runs dry even though the gauge s… Repairs typically run $400-$1,500. Severity: medium.
X350/X358 cars leak water into the cabin and boot by two separate and frequently confused routes. In the boot, water runs down the boot aperture and gets behind the black plastic strips at each rear lamp cluster; the rear vent seals behind the rear bumper below the lamps also fai… Repairs typically run $150-$900. Severity: medium.
A separate component and a separate failure from supercharger nose cone bearing wear: the AJ133 supercharger drive uses a spring-loaded torsional isolator on the blower's nose pulley to damp driveline shock. The end of the original spring bears directly against plastic, and over… Repairs typically run $900-$2,800. Severity: medium.
The X350/X358 uses aluminium front lower control arms with pressed-in rubber bushings that were not originally available as a separate service part. The rubber delaminates from its inner sleeve and the arm develops fore-aft play, producing a clunk over bumps and when the suspensi… Repairs typically run $400-$1,400. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.